Key statistics
Satellite OPS 1127 (DMSP 4B F3) at a glance.
Uptime
20494
Days in orbit
Revolutions
≈ 14.3
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.5
Latest
Satellite identification and parameters
Extended collection of information and parameters for OPS 1127 (DMSP 4B F3).
Object identification
Identified? True
Debris? False
Object name: OPS 1127 (DMSP 4B F3)
International designator: 1969-062A
Object number (NORAD): 4047
Object ID (CCSDS): 4047
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 100.742 minutes
Inclination: 98.4608 deg
SMA: 7171.874 km
Apoapsis: 825.802 km
Periapsis: 761.676 km
RAAN: 102.1877 deg
Eccentricy: 0.0044707
Argument of periapsis: 31.9564 deg
Mean anomaly: 328.4316 deg
Mean motion: 14.29400068 rev/day
Mean motion (dot): 0.0000016 rev/day2
B* drag term: 0.000078360952 1/REarth
Two-line elements (TLE)
Creation date: Aug. 31, 2025, 2:26 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Aug. 30, 2025, 8:37 p.m. UTC
TLE line 0: 0 OPS 1127 (DMSP 4B F3)
TLE line 1: 1 04047U 69062A 25242.85971713 .00000160 00000-0 78361-4 0 9990
TLE line 2: 2 04047 98.4608 102.1877 0044707 31.9564 328.4316 14.29400068919851
Live tracking on map
Real-time ground track for satellite OPS 1127 (DMSP 4B F3).
In-orbit conjunctions
There are no conjunctions computed for OPS 1127 (DMSP 4B F3), at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
DSAP-4B (Defense Satellite Application Program Block 4B) was the sixth version of the military meteorological satellites of the Defense Meteorological Satellite Program.
OPS 1127 (DMSP 4B F3) was lifted into orbit during the mission ‘Thor Burner 2 | DSAP-4B F3’, on board a Thor Burner 2 space rocket.
The launch took place on July 23, 1969, 4:39 a.m. from Space Launch Complex 10W.
For more information about the launch, click the button.
Thor Burner 2 | DSAP-4B F3
Agency: N/A
Status: Launch Successful
Launch date: July 23, 1969, 4:39 a.m. UTC
Rocket: Thor Burner 2
Launch pad: Space Launch Complex 10W
Location: Vandenberg SFB, CA, USA
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